‘壹’ 如何用c语言实现Ping程序功能
windows编程比较烦 读取记事本，读入IP system("ping xx.xx.xx.xx > text.txt"); 再读取text.txt,分析里面的速度值，取平均值，再跟刚才读到的IP拼成字符串输出。 linux上会简单很多， sed+ping 就可以搞定了
求采纳
‘贰’ 求助：如何用c语言完成ping命令功能
//呵呵调用个系统函数不就ok了?有兴趣的话可以加我qq,
//大家一起探讨.qq:237263394
#include<stdlib.h>
#include<stdio.h>
main()
{
char command[128];
while(1)
{printf("Command:");
fgets(command,128,stdin);
if(command[0]=='\n'||command[0]=='q')
exit(0);
system(command);
}
return 0;
}
‘叁’ c语言ping程序中文注释
编写自己的一个ping程序,可以说是许多人迈出网络编程的第一步吧!!这个ping程序的源代码经过我的修改和调试,基本上可以取代windows中自带的ping程序. 各个模块后都有我的详细注释和修改日志,希望能够对大家的学习有所帮助!!
/* 本程序的主要源代码来自MSDN网站, 笔者只是做了一些改进和注释! 另外需要注意的是在Build之前,必须加入ws2_32.lib库文件,否则会提示"error LNK2001:"的错误！*/
Version 1.1 修改记录:
<1> 解决了socket阻塞的问题,从而能够正确地处理超时的请求!
<2> 增加了由用户控制发送ICMP包的数目的功能(即命令的第二个参数)
<3> 增加了对ping结果的统计功能.
#pragma pack(4)
#include "winsock2.h"
#include "stdlib.h"
#include "stdio.h"
#define ICMP_ECHO 8
#define ICMP_ECHOREPLY 0
#define ICMP_MIN 8 // minimum 8 byte icmp packet (just header)
/* The IP header */
typedef struct iphdr {
unsigned int h_len:4; // length of the header
unsigned int version:4; // Version of IP
unsigned char tos; // Type of service
unsigned short total_len; // total length of the packet
unsigned short ident; // unique identifier
unsigned short frag_and_flags; // flags
unsigned char ttl;
unsigned char proto; // protocol (TCP, UDP etc)
unsigned short checksum; // IP checksum
unsigned int sourceIP;
unsigned int destIP;
}IpHeader;
//
// ICMP header
//
typedef struct icmphdr {
BYTE i_type;
BYTE i_code; /* type sub code */
USHORT i_cksum;
USHORT i_id;
USHORT i_seq;
/* This is not the std header, but we reserve space for time */
ULONG timestamp;
}IcmpHeader;
#define STATUS_FAILED 0xFFFF
#define DEF_PACKET_SIZE 32
#define DEF_PACKET_NUMBER 4 /* 发送数据报的个数 */
#define MAX_PACKET 1024
#define xmalloc(s) HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,(s))
#define xfree(p) HeapFree (GetProcessHeap(),0,(p))
void fill_icmp_data(char *, int);
USHORT checksum(USHORT *, int);
int decode_resp(char *,int ,struct sockaddr_in *);
void Usage(char *progname){
fprintf(stderr,"Usage:\n");
fprintf(stderr,"%s [number of packets] [data_size]\n",progname);
fprintf(stderr,"datasize can be up to 1Kb\n");
ExitProcess(STATUS_FAILED);
}
int main(int argc, char **argv){
WSADATA wsaData;
SOCKET sockRaw;
struct sockaddr_in dest,from;
struct hostent * hp;
int bread,datasize,times;
int fromlen = sizeof(from);
int timeout = 1000;
int statistic = 0; /* 用于统计结果 */
char *dest_ip;
char *icmp_data;
char *recvbuf;
unsigned int addr=0;
USHORT seq_no = 0;
if (WSAStartup(MAKEWORD(2,1),&wsaData) != 0){
fprintf(stderr,"WSAStartup failed: %d\n",GetLastError());
ExitProcess(STATUS_FAILED);
}
if (argc <2 ) {
Usage(argv[0]);
}
sockRaw = WSASocket(AF_INET,SOCK_RAW,IPPROTO_ICMP,NULL, 0,WSA_FLAG_OVERLAPPED);
//
//注：为了使用发送接收超时设置(即设置SO_RCVTIMEO, SO_SNDTIMEO)，
// 必须将标志位设为WSA_FLAG_OVERLAPPED !
//
if (sockRaw == INVALID_SOCKET) {
fprintf(stderr,"WSASocket() failed: %d\n",WSAGetLastError());
ExitProcess(STATUS_FAILED);
}
bread = setsockopt(sockRaw,SOL_SOCKET,SO_RCVTIMEO,(char*)&timeout,
sizeof(timeout));
if(bread == SOCKET_ERROR) {
fprintf(stderr,"failed to set recv timeout: %d\n",WSAGetLastError());
ExitProcess(STATUS_FAILED);
}
timeout = 1000;
bread = setsockopt(sockRaw,SOL_SOCKET,SO_SNDTIMEO,(char*)&timeout,
sizeof(timeout));
if(bread == SOCKET_ERROR) {
fprintf(stderr,"failed to set send timeout: %d\n",WSAGetLastError());
ExitProcess(STATUS_FAILED);
}
memset(&dest,0,sizeof(dest));
hp = gethostbyname(argv[1]);
if (!hp){
addr = inet_addr(argv[1]);
}
if ((!hp) && (addr == INADDR_NONE) ) {
fprintf(stderr,"Unable to resolve %s\n",argv[1]);
ExitProcess(STATUS_FAILED);
}
if (hp != NULL)
memcpy(&(dest.sin_addr),hp->h_addr,hp->h_length);
else
dest.sin_addr.s_addr = addr;
if (hp)
dest.sin_family = hp->h_addrtype;
else
dest.sin_family = AF_INET;
dest_ip = inet_ntoa(dest.sin_addr);
//
// atoi函数原型是: int atoi( const char *string );
// The return value is 0 if the input cannot be converted to an integer !
//
if(argc>2)
{
times=atoi(argv[2]);
if(times == 0)
times=DEF_PACKET_NUMBER;
}
else
times=DEF_PACKET_NUMBER;
if (argc >3)
{
datasize = atoi(argv[3]);
if (datasize == 0)
datasize = DEF_PACKET_SIZE;
if (datasize >1024) /* 用户给出的数据包大小太大 */
{
fprintf(stderr,"WARNING : data_size is too large !\n");
datasize = DEF_PACKET_SIZE;
}
}
else
datasize = DEF_PACKET_SIZE;
datasize += sizeof(IcmpHeader);
icmp_data = (char*)xmalloc(MAX_PACKET);
recvbuf = (char*)xmalloc(MAX_PACKET);
if (!icmp_data) {
fprintf(stderr,"HeapAlloc failed %d\n",GetLastError());
ExitProcess(STATUS_FAILED);
}
memset(icmp_data,0,MAX_PACKET);
fill_icmp_data(icmp_data,datasize);
//
//显示提示信息
//
fprintf(stdout,"\nPinging %s ....\n\n",dest_ip);
for(int i=0;i{
int bwrote;
((IcmpHeader*)icmp_data)->i_cksum = 0;
((IcmpHeader*)icmp_data)->timestamp = GetTickCount();
((IcmpHeader*)icmp_data)->i_seq = seq_no++;
((IcmpHeader*)icmp_data)->i_cksum = checksum((USHORT*)icmp_data,datasize);
bwrote = sendto(sockRaw,icmp_data,datasize,0,(struct sockaddr*)&dest,sizeof(dest));
if (bwrote == SOCKET_ERROR){
if (WSAGetLastError() == WSAETIMEDOUT) {
printf("Request timed out.\n");
continue;
}
fprintf(stderr,"sendto failed: %d\n",WSAGetLastError());
ExitProcess(STATUS_FAILED);
}
if (bwrote < datasize ) {
fprintf(stdout,"Wrote %d bytes\n",bwrote);
}
bread = recvfrom(sockRaw,recvbuf,MAX_PACKET,0,(struct sockaddr*)&from,&fromlen);
if (bread == SOCKET_ERROR){
if (WSAGetLastError() == WSAETIMEDOUT) {
printf("Request timed out.\n");
continue;
}
fprintf(stderr,"recvfrom failed: %d\n",WSAGetLastError());
ExitProcess(STATUS_FAILED);
}
if(!decode_resp(recvbuf,bread,&from))
statistic++; /* 成功接收的数目++ */
Sleep(1000);
}
/*
Display the statistic result
*/
fprintf(stdout,"\nPing statistics for %s \n",dest_ip);
fprintf(stdout," Packets: Sent = %d,Received = %d, Lost = %d (%2.0f%% loss)\n",times,
statistic,(times-statistic),(float)(times-statistic)/times*100);
WSACleanup();
return 0;
}
/*
The response is an IP packet. We must decode the IP header to locate
the ICMP data
*/
int decode_resp(char *buf, int bytes,struct sockaddr_in *from) {
IpHeader *iphdr;
IcmpHeader *icmphdr;
unsigned short iphdrlen;
iphdr = (IpHeader *)buf;
iphdrlen = (iphdr->h_len) * 4 ; // number of 32-bit words *4 = bytes
if (bytes < iphdrlen + ICMP_MIN) {
printf("Too few bytes from %s\n",inet_ntoa(from->sin_addr));
}
icmphdr = (IcmpHeader*)(buf + iphdrlen);
if (icmphdr->i_type != ICMP_ECHOREPLY) {
fprintf(stderr,"non-echo type %d recvd\n",icmphdr->i_type);
return 1;
}
if (icmphdr->i_id != (USHORT)GetCurrentProcessId()) {
fprintf(stderr,"someone else''s packet!\n");
return 1;
}
printf("%d bytes from %s:",bytes, inet_ntoa(from->sin_addr));
printf(" icmp_seq = %d. ",icmphdr->i_seq);
printf(" time: %d ms ",GetTickCount()-icmphdr->timestamp);
printf("\n");
return 0;
}
USHORT checksum(USHORT *buffer, int size) {
unsigned long cksum=0;
while(size >1) {
cksum+=*buffer++;
size -=sizeof(USHORT);
}
if(size) {
cksum += *(UCHAR*)buffer;
}
cksum = (cksum >> 16) + (cksum & 0xffff);
cksum += (cksum >>16);
return (USHORT)(~cksum);
}
/*
Helper function to fill in various stuff in our ICMP request.
*/
void fill_icmp_data(char * icmp_data, int datasize){
IcmpHeader *icmp_hdr;
char *datapart;
icmp_hdr = (IcmpHeader*)icmp_data;
icmp_hdr->i_type = ICMP_ECHO;
icmp_hdr->i_code = 0;
icmp_hdr->i_id = (USHORT)GetCurrentProcessId();
icmp_hdr->i_cksum = 0;
icmp_hdr->i_seq = 0;
datapart = icmp_data + sizeof(IcmpHeader);
//
// Place some junk in the buffer.
//
memset(datapart,''E'', datasize - sizeof(IcmpHeader));
}
/******************* 附: ping命令执行时显示的画面 ****************\
* C:\Documents and settings\houjiang>ping 236.56.54.12 * * *
* Pinging 236.56.54.12 with 32 bytes of data: *
* *
* Request timed out. *
* Request timed out. *
* Request timed out. *
* Request timed out. *
* *
* Ping statistics for 236.56.54.12: *
* Packets: Sent = 4, Received = 0, Lost = 4 (100% loss), *
* *
\**************************************************************/
/**************************************************************\
* C:\Documents and Settings\houjiang>ping 127.0.0.1 *
* *
* Pinging 127.0.0.1 with 32 bytes of data: *
* *
* Reply from 127.0.0.1: bytes=32 time<1ms TTL=128 *
* Reply from 127.0.0.1: bytes=32 time<1ms TTL=128 *
* Reply from 127.0.0.1: bytes=32 time<1ms TTL=128 *
* Reply from 127.0.0.1: bytes=32 time<1ms TTL=128 *
* *
* Ping statistics for 127.0.0.1: *
* Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), *
* Approximate round trip times in milli-seconds: *
* Minimum = 0ms, Maximum = 0ms, Average = 0ms *
* *
\**************************************************************/
‘肆’ 如何用C语言实现ping-a命令非常急。。知道的一定要告诉我啊。。
#include<stdio.h>
#include<windows.h>
main()
{
system("Ping -a");
}
‘伍’ C语言编写一个调用PING命令程序怎么写请给个完整的代码
用system函数简单调用ping命令：
#include "stdio.h"
void main()
{
char ip[15];
char command[50];
// printf("enter IP please: ");
scanf("%s",&ip[0]); //输入要ping的ip
sprintf(command,"ping %s",ip);
system(command);
exit(0);
}
‘陆’ 如何用C语言编程实现 dos中的ping程序
你需要调用socket函数族。
这个函数族在不同平台上实现并不相同。
你需要向目标主机
#include<socket.h>
#include<winsock.h>-->如果是win平台
#include<sys/types.h>-->如果是Linux
#include<sys/inet.h>-->如果是solaris平台
步骤是
1. 建立一个socket
int sock=socket(AF_INTE,SOCK_RAW,"你的目标主机地址");
2. connect(sock,sock_address...)
3. send(sock...)
具体的函数参数可以搜索一下，大概步骤就是这样
例子程序可以参考:
http://hi..com/relax0626/blog/item/ef9b723d57f498ee3d6d97a2.html
http://hi..com/relax0626/blog/item/0070b3efbca366efce1b3eac.html
http://hi..com/relax0626/blog/item/0c99394cdd6918f9d72afcad.html
http://hi..com/relax0626/blog/item/4c79b42bf460f4fae6cd40ad.html
http://hi..com/relax0626/blog/item/e0690b3846582824b8998faf.html
‘柒’ 如何使用C语言来判断ping命令是否能ping通，求代码。 要c的不要c++或c#的。
代码在 MAC OS 下运行良好，在 Linux 下得话需要稍作修改
#include<stdio.h>
#include<fcntl.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>
intmain(void)
{
charhost[256],cmd[256];
printf("pleaseinputdest_host:");
scanf("%s",host);
strncpy(cmd,"ping-c5",9);
strncat(cmd,host,strlen(host));
strncat(cmd,">ping.txt",11);
pid_tpid=fork();
if(pid<0)
{
printf("forkerror ");
exit(-1);
}
if(pid==0)
{
if(execlp("/bin/sh","sh","-c",cmd,(char*)0)<0)
printf("execlperror ");
exit(0);
}
if(waitpid(pid,NULL,0)<0)
printf("waitpiderror ");
intfd=open("ping.txt",O_RDWR);
intn;
charbuf[1024];
n=read(fd,buf,sizeof(buf));
if(n<=0)
{
printf("readerror ");
exit(-1);
}
if(strstr(buf,"100.0%")==NULL)
printf("canreach%s",host);
else
printf("can'treach%s",host);
close(fd);
return0;
}
如果你想要 ping 程序，刚好我最近写了一个，要的话私信
‘捌’ 请教如何用C语言实现ping命令
如果你想获取到Ping的结果
那么直接system 调用ping或者popen调用即可。
如果想自己实现，就需要用socket自行发Ping包，并获取回应
这个就很麻烦了。 建议可以看一下gnu ping的源码，或者busybox的ping部分代码。